Dan was running, and he tripped and hurt his knee. The pain signals were carried to his brain by the:

A. sympathetic nervous system.

B. central nervous system.

C. endocrine system.

D. lobes of the brain.

If a health inspector comes for a health inspection and there is no manger present, the employee on duty should ... ?

What is your favourite book in math or science?

Determine whether the statement is true or false, and why. "Only males can be carriers for x-linked recessive traits." A. False, it should read "Only males can be carriers for x-linked dominant traits." B.

Explain why water use is a concern and how freshwater is vital to human life.

Which brain structure regulates such bodily functions as thirst and hunger?

What is the salinity of ocean water

Which of the following could describe a population that is decreasing in size

Which creature cannot survive in the presence of oxygen? Give Examples. What does the creature need to survive instead of oxygen?

Why nitrogen must cycle through an ecosystem

How many cell types are present in your groups set of organisms?